Latch.



C. L. DICKERT &: G. W. RICE.

LATCH.

APPLICATION FILED 91:21:29, 1900. mmnwnn MAR. 30, 1911.

991,959. Patented y 9, 1911.

I aTW 4 w m 39 v 4 q/vitwwooo inf Mad Cir UNITED STATES PATENT OFFICE.

CURTIS L. DICKERT AND CHARLES W. RICE, OF MACON, GEORGIA.

LATCH.

Application filed September 29, 1909, Serial No. 520,148.

To all whom 'it may concern:

Be it known that we, CURTIS L. DlCKER'l and Cnannns l/V. Ricn, citizensof the United States, residing at Macon, in the county of Bibb and Stateof Georgia, have invented certain new and useful Improvements inLatches; and we do declare the following to be a full, clear, and exactde 4 scription of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to latches and par ticularly to devices of thischaracter which are adapted for locking window sashes or window blinds.

One object of the invention is to provide a simple, cheap and efficientlock of this character which may be conveniel'ltly operated from theinside of the room and whereby the blinds may be unlocked withoutopening the window.

A further object of the invention is the provision of a device of thischaracter which is substantially concealed by the sill of thewindow-frame and thereby protected from the weather and at the same timeprotected from unauthorized manipulation.

\Vith the foregoing and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts, as will be more fully described and particularly pointed out inthe appended claim.

In the accompanying drawings, Figure 1 is a detail sectional viewthrough a window sill showing the application of the device to a sashand to a Window blind; Fig. 2 is a detail perspective view of one of thelatching dogs; Fig. 3 is a detail perspective view of one of the keeperplates employed; Fig. 41 is a perspective view of the dog casing.

Referring more especially to the drawings, 1 represents the inner sillof the window frame, 2 the outer sill thereof and 3 the intermediateshelving piece, upon which the sash at is adapted to rest when inlowered position, and against whose outer face the blind 5 is adapted toabut. Embedded in the shelving piece 3, is a pair of latch or dogcasings 5 and G, the former of which is positioned vertically within theshelving piece 3 and the sill 2, and the latter of which is embeddedhorizontally within the shelving piece 3 and the sill 2, the sockettherefor extending inwardly from the Specification of Letters Patent.

Patented May 9, 1911.

Renewed March 30, 1911. Serial No. 618,003.

outer blind abutting face. Each of these casings is provided at itsupper end with a keeper receiving opening 7 and a pair of attaching ears8 which extend laterally on opposite sides thereof and are adapted toreceive fastening devices through the apertures 9 formed therein forthis purpose.

The lower edge of the sash has secured to it a substantially Z-shapedkeeper plate 10 having apertures to receive the attaching screws 11 andhaving one leg of its body formed with a latch or dog receiving opening12. This Z-shaped member lies within a recess 13 formed in the loweredge of the sash to fit the same and has the leg with the aperture 12therein projecting downwardly over the edge of the sash, so as to enterthe opening 7 in the dog casing 5. The outer blind or the one which isprovided with the overlapping head, as shown at 5. is provided with arecess 14 in which is seated a similar Z-shaped keeper plate 15, havingits apertured leg 16 adapted to enter the opening 7 formed in the outerend of the dog casing (3.

Each one of the casings 5 and 6 has pivoted therein a bell crank lever17 which has upon one arm a bill 18 adapted to engage the opening 12 inthe entering legs of the Z-shaped members 12 and 15. The opposite arm ofeach bell crank lever has connected to it an operating rod 19 by meansof apertures 19, the one being connected to the locking dog for theblind passing through a horizontal aperture 20 and being provided withan operating ring or handle 21 at its inner end, while the rod which isconnected to the dog for the sash passes through an inclined channel 22formed in the sill and has upon its inner end the operating ring orhandle 23. Each casing has riveted to its inner side a leaf spring 24:which is adapted to press the engaging arm of the dog intoengagementwith its coacting latching plate so that under normal conditions, thedog will be in position to latch into the opening of the keeper plate.

to wish it to be understood that we provide the bills of the levers withinclined surfaces 18, and further we provide the inner ends of thekeepers with inc-lined surfaces 16, whereby when the ends of the keepersare inserted through the elongated openings 7 in the sides of thecasings the inclined surfaces of the keepers will ride over the inclinedsurfaces of the bills thereby to more readily insure the bills to engagethe openings 12 of the keepers.

Having thus described our invention, What We claim is A latch comprisinga casing With a bell crank lever pivoted therein having on one end abill provided With an inclined terminal, the other end of said leverhaving a perforation, a spring having one end 'seserted through theelongated opening in the side of the casing and provided With atransverse opening, the under surface of'gq said arm of the keeperhaving an inclined terminal Which permits of the inclined terminal ofthe bill to ride over the same so as to engage the transverse opening inthe arm of the keeper, and an operating rod 25 secured to saidperforation of the lever.

In testimony whereof We have hereunto set our hands in presence of twosubscrlblng Witnesses.

CURTIS L. DICKERT. CHARLES W. RICE. lVitnesses R. C. SAUDER, A. J. ORR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, I). G.

